Polygons

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  • Q1

    In the given figure, value of x° + y° + z° is

    Marks:1
    Answer:

    360°

    Explanation:

    x° + 60° + z° + 40° + 80° + y°= 180° × 3

    (Sum of three linear angles)

    x° + y° + z °= 540° – 180°

    x° + y° + z °= 360°

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  • Q2

    The angle formed between any side of a polygon and extended adjacent side outside the polygon is called an

    Marks:1
    Answer:

    exterior angle of the polygon.

    Explanation:

    The angle formed between any side of a polygon and extended adjacent side outside the polygon is called an exterior angle of the polygon.

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  • Q3

    Out of the following figure, the regular polygon is

    Marks:1
    Answer:

    Explanation:

    A closed figure whose all sides are equal is called regular polygon. So, option (a) is correct.

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  • Q4

    An interior angle of a polygon is 100°. The measurement of its adjacent exterior angle will be...

    Marks:1
    Answer:

    80°.

    Explanation:

    An exterior angle + adjacent interior angle = 180°

                                               exterior angle = 180 – 100°

                                                                    = 80°

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  • Q5

    Out of the following figures, the regular polygon is

    Marks:1
    Answer:

    Explanation:

    Because it has four equal sides.

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